/* ============================================================
   Flughafebeck Portal — CSS  (Apple-Style)
   ============================================================ */

/* CSS layers: dark > theme > base. Unlayered component CSS always wins over all layers. */
@layer base, theme, dark;

@layer base {
:root {
    --bg:           #f5f5f7;
    --surface:      #ffffff;
    --border:       #d2d2d7;
    --text:         #1d1d1f;
    --text-sec:     #6e6e73;
    --accent:       #0071e3;
    --accent-hover: #0077ed;
    --danger:       #ff3b30;
    --success:      #30d158;
    --warning:      #ff9f0a;
    --radius-sm:    8px;
    --radius-md:    12px;
    --radius-lg:    18px;
    --shadow-sm:    0 1px 3px rgba(0,0,0,.12);
    --shadow-md:    0 4px 20px rgba(0,0,0,.10);
    --topbar-h:     56px;
    --font:         -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif;
    --font-disp:    -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", sans-serif;
    --sidebar-bg:   var(--surface);
    --sidebar-text: var(--text);
}
}

@layer dark {
html.dark {
    --bg:           #1c1c1e;
    --surface:      #2c2c2e;
    --border:       #48484a;
    --text:         #f5f5f7;
    --text-sec:     #98989d;
    --accent:       #0a84ff;
    --accent-hover: #409cff;
    --shadow-sm:    0 1px 3px rgba(0,0,0,.3);
    --shadow-md:    0 4px 20px rgba(0,0,0,.4);
    --sidebar-bg:   #1c1c1e;
    --sidebar-text: var(--text-sec);
}
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 17px; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

/* ── Topbar ───────────────────────────────────────────────── */

.topbar {
    background: rgba(255,255,255,.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 0 1.75rem;
    height: var(--topbar-h);
    display: flex;
    align-items: center;
    gap: 1rem;
    position: fixed;
    top: 0;
    left: var(--sidebar-w);
    right: 0;
    z-index: 100;
}

html.dark .topbar {
    background: rgba(28,28,30,.88);
}

.topbar-logo img {
    height: 30px;
    width: auto;
    object-fit: contain;
    display: block;
}

.topbar-brand {
    font-family: var(--font-disp);
    font-size: .95rem;
    font-weight: 700;
    color: var(--text);
    white-space: nowrap;
}

.topbar-sep {
    width: 1px;
    height: 18px;
    background: var(--border);
    flex-shrink: 0;
}

.topbar-spacer { flex: 1; }

.topbar-user {
    display: flex;
    align-items: center;
    gap: .75rem;
    font-size: .83rem;
    color: var(--text-sec);
}

.topbar-username {
    font-weight: 500;
    color: var(--text);
}

/* ── Main Content ─────────────────────────────────────────── */

.portal-wrap {
    max-width: 90%;
    margin: 0 auto;
    padding: 2.75rem 1.75rem 4rem;
}

.portal-greeting {
    margin-bottom: 2.25rem;
}

.portal-greeting h1 {
    font-family: var(--font-disp);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: .25rem;
}

.portal-greeting p {
    font-size: .9rem;
    color: var(--text-sec);
}

/* ── App Grid ─────────────────────────────────────────────── */

.app-section-title {
    font-size: .72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .07em;
    color: var(--text-sec);
    margin-bottom: 1rem;
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(248px, 1fr));
    gap: 1.1rem;
    margin-bottom: 2.5rem;
}

.app-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 1.75rem 1.6rem 1.4rem;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: var(--text);
    border: 1.5px solid transparent;
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.app-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(255,255,255,.06) 0%, transparent 60%);
    pointer-events: none;
}

.app-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--border);
}

.app-card:active {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

html.dark .app-card:hover {
    border-color: #5a5a5c;
}

.app-card-disabled {
    opacity: .45;
    cursor: not-allowed;
    pointer-events: none;
}

.app-icon {
    font-size: 2.6rem;
    line-height: 1;
    margin-bottom: 1.1rem;
    display: block;
}

.app-name {
    font-family: var(--font-disp);
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: .35rem;
    display: flex;
    align-items: center;
    gap: .4rem;
}

.app-desc {
    font-size: .8rem;
    color: var(--text-sec);
    line-height: 1.55;
    flex: 1;
}

.app-footer {
    margin-top: 1.1rem;
    padding-top: .85rem;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.app-open {
    font-size: .78rem;
    color: var(--accent);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: .3rem;
}

.app-open::after {
    content: '\203A';
    font-size: 1rem;
    line-height: 1;
}

/* Coming soon badge */
.badge-soon {
    display: inline-flex;
    align-items: center;
    padding: .12rem .45rem;
    border-radius: 999px;
    font-size: .6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    background: var(--bg);
    color: var(--text-sec);
    border: 1px solid var(--border);
}

html.dark .badge-soon { background: #3a3a3c; }

/* ── Buttons ──────────────────────────────────────────────── */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    padding: .5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: .88rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: opacity .15s, background .15s;
    text-decoration: none;
    white-space: nowrap;
    height: 36px;
    font-family: var(--font);
}
.btn:active { opacity: .75; }
.btn-primary   { background: var(--accent); color: #fff; }
.btn-secondary { background: var(--bg); color: var(--text); border: 1px solid var(--border); }
.btn-danger    { background: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }
.btn-sm        { padding: .3rem .65rem; font-size: .82rem; height: 30px; }

.btn-danger:hover { background: #fecaca; }
html.dark .btn-danger { background: #450a0a; color: #fca5a5; border-color: #7f1d1d; }
html.dark .btn-danger:hover { background: #7f1d1d; color: #fee2e2; }
html.dark .btn-secondary { background: #3a3a3c; border-color: var(--border); }

/* ── Cards ────────────────────────────────────────────────── */

.card {
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}
.card-header {
    padding: 1rem 1.25rem .75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .75rem;
    border-bottom: 1px solid var(--border);
}
.card-title { font-size: 1rem; font-weight: 600; }
.card-subtitle { font-size: .78rem; color: var(--text-sec); margin-top: 2px; }
.card-body { padding: 1.25rem; }

html.dark .card        { background: var(--surface); border-color: var(--border); }
html.dark .card-header { background: var(--surface); border-color: var(--border); }

/* ── Tables ───────────────────────────────────────────────── */

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .88rem;
}
.data-table th {
    text-align: left;
    padding: .55rem .75rem;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    font-size: .7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--text-sec);
    white-space: nowrap;
}
.data-table td {
    padding: .6rem .75rem;
    border-bottom: 1px solid #f5f5f7;
    vertical-align: middle;
}
.data-table tr:last-child td { border-bottom: none; }

html.dark .data-table thead tr { background: #3a3a3c; }
html.dark .data-table tr:hover  { background: #3a3a3c; }
html.dark .data-table th        { background: #3a3a3c; }
html.dark .data-table td,
html.dark .data-table th        { border-color: var(--border); }

/* ── KPI-Kacheln (Statistik-Kachel-Grid, z.B. Analyse-Seiten) ─ */

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: .75rem;
    margin-bottom: 1.25rem;
}
.kpi-grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 800px) { .kpi-grid-4 { grid-template-columns: 1fr 1fr; } }

.kpi-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: .85rem 1rem;
}
.kpi-card .kpi-label { font-size: .72rem; color: var(--text-sec); text-transform: uppercase; letter-spacing: .05em; }
.kpi-card .kpi-value { font-size: 1.45rem; font-weight: 700; color: var(--text); margin-top: .15rem; }
.kpi-card .kpi-sub   { font-size: .75rem; color: var(--text-sec); margin-top: .05rem; }

/* ── Badges ───────────────────────────────────────────────── */

.badge {
    display: inline-flex;
    align-items: center;
    padding: .2rem .55rem;
    border-radius: 999px;
    font-size: .72rem;
    font-weight: 600;
    white-space: nowrap;
}
.badge-blue   { background: #e8f0fb; color: var(--accent); }
.badge-green  { background: #d1fae5; color: #065f46; }
.badge-red    { background: #fee2e2; color: #991b1b; }
.badge-gray   { background: #f0f0f5; color: var(--text-sec); }
.badge-orange { background: #fff3e0; color: #92400e; }

html.dark .badge-gray { background: #3a3a3c; color: var(--text-sec); }

/* ── Forms ────────────────────────────────────────────────── */

.form-group { margin-bottom: 1rem; }
.form-group label {
    display: block;
    font-size: .82rem;
    font-weight: 500;
    margin-bottom: .4rem;
}
.form-control {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: .55rem .8rem;
    font-size: .9rem;
    font-family: var(--font);
    color: var(--text);
    background: var(--surface);
    outline: none;
    -webkit-appearance: none;
    transition: border-color .15s, box-shadow .15s;
}
.form-control:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0,113,227,.12);
}
html.dark .form-control { background: #3a3a3c; }

/* ── Login ────────────────────────────────────────────────── */

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    padding: 1rem;
}

.login-box {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 2.5rem 2rem;
    width: 100%;
    max-width: 360px;
}

.login-logo {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo img {
    max-height: 64px;
    max-width: 200px;
    width: auto;
    object-fit: contain;
}

.login-logo p {
    font-size: .82rem;
    color: var(--text-sec);
    margin-top: .45rem;
    font-weight: 500;
}

.alert {
    padding: .65rem .9rem;
    border-radius: var(--radius-sm);
    font-size: .85rem;
    margin-bottom: 1rem;
}
.alert-error   { background: #fee2e2; color: #991b1b; }
.alert-success { background: #d1fae5; color: #065f46; }

/* ── Page loader overlay ───────────────────────────────────── */

#page-loader {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    opacity: 1;
    transition: opacity .35s ease;
}

#page-loader.pl-hidden {
    opacity: 0;
    pointer-events: none;
}

#page-loader-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

#page-loader-logo {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pl-breathe 2s ease-in-out infinite;
}

#page-loader-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: var(--radius-md);
}

#page-loader-spinner { width: 48px; height: 48px; }
#page-loader-spinner svg { width: 100%; height: 100%; animation: pl-rotate 1.4s linear infinite; }
.pl-track { stroke: var(--border); }
.pl-arc { stroke: var(--accent); stroke-dasharray: 94; stroke-dashoffset: 94; animation: pl-dash 1.4s ease-in-out infinite; }

#page-loader-text {
    font-size: .78rem;
    font-weight: 500;
    color: var(--text-sec);
    letter-spacing: .04em;
    text-transform: uppercase;
}

.pl-dots span { display: inline-block; opacity: 0; animation: pl-dot 1.2s ease-in-out infinite; }
.pl-dots span:nth-child(2) { animation-delay: .2s; }
.pl-dots span:nth-child(3) { animation-delay: .4s; }

@keyframes pl-rotate { to { transform: rotate(360deg); } }
@keyframes pl-dash {
    0%   { stroke-dashoffset: 94; }
    50%  { stroke-dashoffset: 20; }
    100% { stroke-dashoffset: 94; }
}
@keyframes pl-breathe {
    0%, 100% { transform: scale(1);    opacity: 1;   }
    50%       { transform: scale(.94); opacity: .75; }
}
@keyframes pl-dot {
    0%, 100% { opacity: 0; }
    40%, 60%  { opacity: 1; }
}

/* ── Toggle Switch (Apple-Style) ─────────────────────────── */

.toggle-switch { display: inline-flex; align-items: center; flex-shrink: 0; }
.toggle-switch input { display: none; }
.toggle-track {
    position: relative;
    width: 44px; height: 26px;
    background: #e5e5ea;
    border-radius: 100px;
    transition: background .2s;
    display: block;
}
.toggle-thumb {
    position: absolute;
    top: 2px; left: 2px;
    width: 22px; height: 22px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0,0,0,.25);
    transition: transform .2s;
}
.toggle-switch input:checked + .toggle-track { background: #30d158; }
.toggle-switch input:checked + .toggle-track .toggle-thumb { transform: translateX(18px); }
html.dark .toggle-track { background: #48484a; }
html.dark .toggle-switch input:checked + .toggle-track { background: #30d158; }

/* ── Shared sidebar layout ─────────────────────────────────── */

:root { --sidebar-w: 240px; }

.layout { display: flex; min-height: 100vh; }

.sidebar {
    width: var(--sidebar-w);
    flex-shrink: 0;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 200;
    transition: transform .28s cubic-bezier(.4,0,.2,1);
}

.sidebar-logo {
    padding: 0 1rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: .55rem;
    height: var(--topbar-h);
    flex-shrink: 0;
    text-decoration: none;
    color: var(--text);
}

.sidebar-nav {
    padding: .75rem 0;
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    /* Nav-Fläche = Seiten-Hintergrund (leichtgrau): Gruppentitel (transparent) und der
       leere Abstand unten werden dadurch grau; die Nav-Items bekommen unten die
       Sidebar-Farbe zurück und wirken so wie weisse Zeilen auf grauem Grund. */
    background: var(--bg);
}

.nav-section {
    padding: .55rem 1.25rem .2rem;
    font-size: .68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--text-sec);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: .6rem;
    padding: .55rem 1.25rem;
    color: var(--sidebar-text);
    text-decoration: none;
    font-size: .88rem;
    transition: background .15s;
    cursor: pointer;
    border: none;
    background: var(--sidebar-bg);   /* weisse Zeile auf grauer Nav-Fläche (var(--bg)) */
    width: 100%;
    font-family: inherit;
    -webkit-tap-highlight-color: transparent;
}
.nav-item .icon { width: 20px; text-align: center; flex-shrink: 0; }
.nav-item:hover  { background: var(--bg); }
.nav-item.active { background: #e8f0fb; color: var(--accent); font-weight: 500; }

.sidebar-footer {
    padding: .9rem 1rem;
    border-top: 1px solid var(--border);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: .4rem;
}

.btn-sidebar {
    display: block;
    padding: .35rem .75rem;
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: .8rem;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    transition: background .15s;
    cursor: pointer;
    font-family: inherit;
    width: 100%;
    box-sizing: border-box;
}
.btn-sidebar:hover  { background: var(--border); }
.btn-sidebar.active { background: #dbeafe; color: var(--accent); border-color: #bfdbfe; }
.btn-sidebar.danger:hover { background: #fee2e2; color: #b91c1c; border-color: #fca5a5; }
html.dark .btn-sidebar.active { background: rgba(10,132,255,.18); color: var(--accent); border-color: rgba(10,132,255,.28); }

/* ── Collapsible nav group ─────────────────────────────────── */
.nav-group-toggle {
    display: flex; align-items: center; justify-content: space-between;
    width: 100%; padding: .6rem 1.25rem;
    background: none; border: none; cursor: pointer;
    font-size: .68rem; font-weight: 600; text-transform: uppercase;
    letter-spacing: .07em; color: var(--text-sec); font-family: inherit;
    -webkit-tap-highlight-color: transparent; transition: color .15s, background .15s;
}
.nav-group-toggle:hover { color: var(--text); background: var(--bg-alt, #f3f4f6); }
.nav-group-chevron { font-size: .58rem; opacity: .65; transition: transform .2s; flex-shrink: 0; }
.nav-group.open > .nav-group-toggle > .nav-group-chevron { transform: rotate(90deg); }
.nav-group-items { overflow: hidden; max-height: 0; transition: max-height .3s ease; }
.nav-group.open > .nav-group-items { max-height: 2000px; }
html.dark .nav-group-toggle { color: #636366; }
html.dark .nav-group-toggle:hover { color: var(--text-sec); background: rgba(255,255,255,.06); }

/* keep legacy class working */
.btn-logout { display: block; padding: .35rem .75rem; background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 6px; font-size: .8rem; font-weight: 500; text-align: center; text-decoration: none; transition: background .15s; }
.btn-logout:hover { background: #fee2e2; color: #b91c1c; border-color: #fca5a5; }

/* ── Content wrapper ──────────────────────────────────────── */
.content {
    padding: 1.5rem 2rem;
    min-width: 0;
}

/* ── Table responsive wrapper ─────────────────────────────── */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.35);
    z-index: 190;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    opacity: 0;
    transition: opacity .28s;
}
.sidebar-overlay.visible { display: block; opacity: 1; }

.main {
    margin-left: var(--sidebar-w);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-width: 0;
    padding-top: var(--topbar-h);
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    padding: 6px;
    background: none;
    border: none;
    cursor: pointer;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    -webkit-tap-highlight-color: transparent;
}
.hamburger span { display: block; height: 2px; background: var(--text); border-radius: 2px; transition: transform .25s, opacity .2s; }

/* Sidebar dark mode */
html.dark .sidebar { border-color: var(--border); }
html.dark .nav-section { color: #636366; }
html.dark .nav-item:hover { background: #3a3a3c; color: var(--text); }
html.dark .nav-item.active { background: #3a3a3c; color: var(--accent); }
html.dark .sidebar-footer { border-color: var(--border); }
html.dark .btn-sidebar, html.dark .btn-logout { background: #3a3a3c; color: var(--text-sec); border-color: var(--border); }

/* Sidebar mobile */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); box-shadow: 4px 0 20px rgba(0,0,0,.25); }
    .sidebar-overlay.visible { display: block; opacity: 1; }
    .main { margin-left: 0; }
    .topbar { left: 0; }
    .hamburger { display: flex; }
    /* Touch-friendly sizing */
    .nav-item     { min-height: 44px; padding: .65rem 1.25rem; }
    .btn-sidebar,
    .btn-logout   { min-height: 40px; padding: .45rem .75rem; }
    .content      { padding: 1.25rem 1.5rem; }
    .topbar-user  { gap: .5rem; }
}

/* ── Mobile ───────────────────────────────────────────────── */

@media (max-width: 600px) {
    .topbar { padding: 0 1rem; }
    .topbar-brand { display: none; }
    .topbar-sep   { display: none; }
    .portal-wrap  { padding: 1.75rem 1rem 3rem; max-width: 100%; }
    .portal-greeting h1 { font-size: 1.35rem; }
    .app-grid { grid-template-columns: 1fr 1fr; gap: .75rem; }
    .app-card { padding: 1.1rem .95rem 1rem; }
    .app-icon { font-size: 2rem; margin-bottom: .75rem; }
    .app-name { font-size: .9rem; }
    .app-desc { display: none; }
    .app-footer { display: none; }
    /* iOS: prevent auto-zoom on input focus */
    .form-control { font-size: 16px; min-height: 44px; }
    /* Touch-sized buttons */
    .btn    { min-height: 44px; }
    .btn-sm { min-height: 36px; }
    /* Tighter card padding */
    .card-header { padding: .85rem 1rem .65rem; }
    .card-body   { padding: 1rem; }
    .content     { padding: 1rem; }
    /* Login box */
    .login-box   { padding: 2rem 1.25rem; }
    /* Topbar user row */
    .topbar-user { gap: .35rem; }
}

@media (max-width: 480px) {
    /* Shrink topbar action buttons to keep topbar on one line */
    .topbar-user .btn-sm {
        padding: .22rem .45rem;
        font-size: .74rem;
        height: auto;
        min-height: 32px;
    }
    /* Toggle switch smaller */
    .toggle-track { width: 36px; height: 22px; }
    .toggle-thumb { width: 18px; height: 18px; }
    .toggle-switch input:checked + .toggle-track .toggle-thumb { transform: translateX(14px); }
    /* Tighter card body */
    .card-body { padding: .85rem; }
}

@media (max-width: 380px) {
    .app-grid { grid-template-columns: 1fr; }
}

/* ── OS Dark Mode (System Preference) ─────────────────────── */
@media (prefers-color-scheme: dark) {
    @layer dark {
        html:not(.light) {
            --bg:           #1c1c1e;
            --surface:      #2c2c2e;
            --border:       #48484a;
            --text:         #f5f5f7;
            --text-sec:     #98989d;
            --accent:       #0a84ff;
            --accent-hover: #409cff;
            --shadow-sm:    0 1px 3px rgba(0,0,0,.3);
            --shadow-md:    0 4px 20px rgba(0,0,0,.4);
            --sidebar-bg:   #1c1c1e;
            --sidebar-text: #98989d;
        }
    }
    html:not(.light) .topbar          { background: rgba(28,28,30,.88); }
    html:not(.light) .badge-soon      { background: #3a3a3c; }
    html:not(.light) .btn-danger      { background: #450a0a; color: #fca5a5; border-color: #7f1d1d; }
    html:not(.light) .btn-danger:hover { background: #7f1d1d; color: #fee2e2; }
    html:not(.light) .btn-secondary   { background: #3a3a3c; }
    html:not(.light) .data-table th   { background: #3a3a3c; border-color: var(--border); }
    html:not(.light) .data-table tr:hover { background: #3a3a3c; }
    html:not(.light) .badge-gray      { background: #3a3a3c; }
    html:not(.light) .form-control    { background: #3a3a3c; }
    html:not(.light) .toggle-track    { background: #48484a; }
    html:not(.light) .sidebar         { background: #1c1c1e; }
    html:not(.light) .nav-section,
    html:not(.light) .nav-group-toggle { color: #636366; }
    html:not(.light) .nav-item:hover  { background: #3a3a3c; }
    html:not(.light) .nav-item.active { background: #3a3a3c; }
    html:not(.light) .btn-sidebar,
    html:not(.light) .btn-logout      { background: #3a3a3c; color: var(--text-sec); }
    html:not(.light) .btn-sidebar.active { background: rgba(10,132,255,.18); color: var(--accent); border-color: rgba(10,132,255,.28); }
}

/* ── Accessibility ─────────────────────────────────────────── */

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.btn:focus-visible,
.app-card:focus-visible,
.nav-item:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(0,113,227,.18);
}

:focus:not(:focus-visible) { outline: none; }

/* ── Skeleton Loading ──────────────────────────────────────── */

.skeleton {
    background: linear-gradient(90deg, var(--border) 25%, var(--bg) 50%, var(--border) 75%);
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
    color: transparent !important;
}

@keyframes skeleton-shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ── Mitteilungen-Glocke Pulse (neue Mitteilung eingetroffen) ────────── */

@keyframes mtPulse {
  0%   { transform: scale(1); }
  30%  { transform: scale(1.35) rotate(-12deg); }
  50%  { transform: scale(1.1) rotate(10deg); }
  70%  { transform: scale(1.2) rotate(-6deg); }
  100% { transform: scale(1); }
}
.mt-pulse { animation: mtPulse .6s ease-in-out; }

/* ── Touch Tap Feedback ────────────────────────────────────── */

@media (hover: none) {
    .app-card:active {
        transform: scale(.97) !important;
        opacity: .82 !important;
        transition: transform .1s ease, opacity .1s ease !important;
    }
}